2 106 953 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
70548723338435171383737199	26	85.9	2020-05-07 16:23:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	210 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Duncan Booth	23ACF23764D4355C	0
Verified (Factored)		Michael Weingran	23ACF23764D4355C	0
Verified (Factored)	2015-11-14	MadPoo	23ACF23764D4355C	1660860

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-05-07	riccardo uberti	F6D6416F767FF1CC	1	2016871	5	3
Verified	2020-05-08	riccardo uberti	F6D6416F767FF1CC	1	1399276	5	3
Verified	2020-05-14	Nesowa	F6D6416F767FF1CC	1	810829	5	3

History

Date	User	Type	Result
2020-05-14	Nesowa	C-PRP	M2106953/70548723338435171383737199 : F6D6416F767FF1CC PRP: Verified PRP without proof (not generated)
2020-05-08	riccardo uberti	C-PRP	M2106953/70548723338435171383737199 : F6D6416F767FF1CC PRP: Verified PRP without proof (not generated)
2020-05-07	riccardo uberti	C-PRP	M2106953/70548723338435171383737199 : F6D6416F767FF1CC PRP: Verified PRP without proof (not generated)
2020-05-07	EricP	F-ECM	Factor: 70548723338435171383737199 / (ECM curve 1, B1=50000, B2=5000000, Sigma=2060459543263181)
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2017-07-11	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2017-06-09	Joss	NF-PM1	B1=447216, B2=4472160, E=6
2017-05-30	Joss	NF-PM1	B1=372680, B2=3726800, E=6
2016-11-08	Joss	NF-PM1	B1=223608
2016-10-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-16	Joss	NF-PM1	B1=186340, B2=6020000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-27	ramgeis	NF	no factor from 2^65 to 2^66
2015-11-14	MadPoo	C-LL	23ACF23764D4355C
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-05	ramgeis	NF	no factor from 2^62 to 2^63
2012-03-30	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-25	James Heinrich	NF-PM1	B1=140000, B2=3010000, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2009-08-02	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61

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